You would need to invest some time and effort into making decent outputs from whatever AI you're using.
Both to cover your butt and so that you can actually make decent use of the art you're creating anyways. If it gets very obvious what art you trained your ML system on, it could easily become a problem. And if it's too generic, it looks like all the other slop getting made.
But I'll also say there's no shortage of tools to use to make something without AI. Koikatsu, Honey Select 2, Blockbench, Blender, and Unreal all either let you make some basic assets or have stores that sell pre-baked assets dirt cheap.
You don't need to go the path of AI art if you don't want to, and I'd argue that as a non-artist your time would be better spent either creating cheapie assets or buying cheap, widely available ones to supplement your game. It is possible to make good AI art, but it's also a significant time sink.
I don't want to buy assets because I'd be limited by them and they'd take over the whole vibe of the game. I was thinking of going deep into manual editing of assets - not "Generate girl" in SD. More like sketching (EDIT: or staging), placing, planning and then generating assets bit by bit, until I get exactly what I want. Roughly the same work an artist would do, if an artist had broken fingers. I'm THAT bad at drawing. It's unfortunate. But, I can sketch a scene, say, build a room in Google Sketch then AI gen over it to get exactly what I want.
P.S. I'm currently thinking 2D assets, Ren'Py, open world, 5 hour playtime. Think Summertime Saga, but tiny. I also have a detailed story, characters, etc.
My main two questions are about the art, and another one about the fetishes and getting approved by Patreon, but we'll cross that bridge when we get there. First, I gotta make something F95 can enjoy. For free, obv.